COLLEGE ZOOLOGY 



the bee stings, a suitable place is selected with the help of the 



sting feelers (p) ; then the 

 two barbed darts (b) are thrust 

 forward. The sheath (sh) 

 serves to guide the darts, to 

 open up the wound, and to 

 aid in conducting the poison. 

 The poison is secreted in a 



FIG. 241. Internal organs of honey-bee, bt, mal- 

 pighian tubules; c.s, true stomach; dv, dorsal vessel; 

 e> eye ; g, ganglia of nerve chain ; hs, honey sac; 

 li, rectum ; Ip, labial palpus ; mesa.t, mesothorax ; 

 meta.t, metathorax; mx, maxilla; n, nerves; No. i, 

 No. 2, No. 3, salivary glands; oe, oesophagus; p, stomach 

 mouth; pro.t, prothorax; si, small intestine (ileum); 

 v, ventricles of dorsal vessel. (From Packard, after 

 Cheshire.) 



pair of glands (pg), one acid, 

 the other alkaline, and is 

 stored in a reservoir (ps). 

 Generally the sting, poison 

 glands, and part of the in- 

 testine are pulled out when 

 a bee stings, so that death 

 ensues after several hours, but 

 if only the sting is lost, 

 the bee is not fatally in- 

 jured. The queen 

 seldom uses her 

 sting except in 

 combat with other 

 queens. 



The Anatomy 

 and Physiology 

 of the Internal Organs. - 

 DIGESTION (Fig. 241). The 

 mouth opens into a narrow 

 (esophagus (oe) , 

 which leads to 

 the honey sac (hs) , 

 situated near the 

 anterior end of 

 the abdomen. 

 The stomach 



